<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            width: 300px;
            height: 300px;
            background-color: red;
        }

        .box {
            width: 150px;
            height: 150px;
            background-color: blue;
            float: left;
        }
        img{
            width:300px;
            float:left;
        }
    </style>
</head>

<body>
    <div class="box"></div>
    <div class="container"></div>
    <img src="./1.jpg" alt="">
    <img src="./1.jpg" alt="">
</body>

</html>